Keep the current section lit while a Livewire component updates

<x-section-nav> and <x-app-shell> mark an item current when its URL is
the request's. While a Livewire component on the page re-renders, the
request is Livewire's update endpoint, so no section or destination
stayed lit after the morph. Both now compare with the page's URL from
Livewire::originalUrl() during a Livewire update request; a normal
request compares exactly as before.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RHoXZSHc8gGpZjFmA5fPc2

resources/views/components/app-shell.blade.php

@@ -20,7 +20,8 @@
        remembered and applied before the first paint (`$store.rail`, <x-theme-script>).
 
      `destinations` is a list of arrays: `title`, `icon` (a Material Symbol), `url`, and optionally
-     `active` (by default: the URL is the current one), `badge` (`true` for a dot, or a count),
+     `active` (by default: the URL is the page's; during a Livewire update request, the page the
+     component was rendered on rather than the update endpoint), `badge` (`true` for a dot, or a count),
      `section` (a heading the destination is grouped under in the rail; only an expanded rail shows
      it), `bar` (`false` keeps it out of the bottom bar; M3 wants three to five there) and
      `navigate` (`false` for a full page load instead of `wire:navigate`).
@@ -56,7 +57,7 @@
 
 @php
     $label ??= __('Main');
-    $current = request()->url();
+    $current = \Livewire\Livewire::isLivewireRequest() ? \Livewire\Livewire::originalUrl() : request()->url();
 
     $items = collect($destinations)
         ->filter(fn ($item): bool => is_array($item) && filled($item['title'] ?? null))